The Best ACT Prep Courses Online in 2026

Quick Summary

The best ACT prep online course in 2026 is PrepScholar because it offers:

• The only self-paced platform fully rebuilt from the ground up for the Enhanced ACT
• The largest content library in the self-paced category (2,800+ practice questions, 4 full-length practice tests, 60+ hours of content)
• Adaptive personalization that routes each student toward their specific weaknesses (no other self-paced competitor offers this)
• A 4-point score improvement guarantee, the strongest specific guarantee in the self-paced category
• A natively integrated AI Learning Assistant
• Parent progress reporting and SMS reminders unavailable anywhere else in this comparison
• A 5-day free trial before you pay a dollar

PrepScholar is priced at $397, making it the strongest all-around value in paid online ACT prep.

The ACT Changed. Has Your Prep Course?

The ACT changed more in 2025 than it had in decades. The Enhanced ACT (now the only version of the exam available) is shorter, has less of a time crunch, makes Science optional, and calculates your composite score from three sections instead of four.

For years, choosing an ACT prep course was relatively straightforward. Most providers taught the same test, used similar strategies, and differed primarily in price, reputation, and teaching style.

That's no longer true. Students preparing in 2026 need more than recycled lessons from 2024 or 2025.

The focus now is no longer choosing the ACT prep course with the biggest brand name, it's figuring out which ACT prep course was actually rebuilt for the Enhanced ACT? That's what'll get top scores.

To answer that question, we analyzed the leading self-paced ACT prep programs based on:

• Enhanced ACT readiness
• Practice question volume
• Full-length practice tests
• Score guarantees
• Personalization
• Technology features
• Student reviews
• Overall value

The Best ACT Online Prep Programs, Ranked

Methodology

To create this comparison article, we researched each company's official website, verified third-party review data, assessed practice question counts and test volume, and evaluated the specificity and terms of each program's score guarantee.

We also researched how each platform responded to the Enhanced ACT rollout because in 2026, that's arguably the most important evaluative dimension of all. A program that hasn't updated its content for the new format isn't actually preparing students for the exam they'll take.

How Do the Best ACT Prep Online Courses Compare in 2026?

PrepScholar: Best Overall ACT Prep Online Course

Price: $397 | Free Trial: 5 days | 4-Point Score Guarantee

PrepScholar earns the top spot because it approaches ACT preparation differently than most competitors.

Rather than simply updating an existing curriculum, PrepScholar rebuilt its ACT program around the Enhanced ACT's new structure. Lessons, practice questions, study plans, and instructional content were revised to reflect the current exam.

For students preparing for the ACT in 2026, that's a key difference.

Many test-prep companies spent years optimizing content for the old ACT. The challenge now is both providing practice material and ensuring students spend their limited study time mastering the skills that actually matter on today's test.

Why PrepScholar Ranked #1

Two things set PrepScholar apart from every competitor in this comparison. The first is its response to the Enhanced ACT. Rather than adjusting its existing curriculum, PrepScholar rebuilt its ACT prep program from the ground up with 54 refreshed skill lessons aligned to the new format, math questions fully rewritten for the four-answer-choice structure (down from five), updated timing strategies, and an interface redesigned to mirror the pacing students will experience on test day. No other self-paced program in this comparison made changes of comparable scope.

The second differentiator is adaptive learning. PrepScholar's platform continuously analyzes how each student is performing and adjusts the study path accordingly. A student scoring a 21 on the English section has a different gap profile than a student scoring a 28, and PrepScholar's system treats them differently, routing both toward the content most likely to move their composite. Their AI assistant is also available 24/7 for students who get stuck on a tricky problem or need a concept explained differently.

Content Volume

PrepScholar's library is larger than any competitor in this comparison:

• 2,800+ practice questions written by real-life ACT content experts and perfect scorers. No questions are generated by AI, which is prone to hallucinations and inconsistencies.
• 4 full-length practice tests
• 60+ hours of instructional content

For context: Magoosh offers 1,500+ questions and 4 tests. Kaplan offers 2,000+ questions and 3 tests. Princeton Review offers an unspecified number of questions and 5 tests. For students targeting a 30 or above, content volume is important because you need enough unique problems to build pattern recognition without recycling material you've already memorized.

Enhanced ACT Alignment

The Enhanced ACT launched in September 2025 for all national Saturday testing and extended to school-day testing in spring 2026. The core changes: a shorter test, Science now optional and excluded from the composite score, Math reduced to four answer choices, and a composite calculated from English, Math, and Reading only.

PrepScholar is the only self-paced program that fully rebuilt its curriculum in response. That means students who enroll today encounter practice questions and test conditions that mirror what they'll actually face, not a legacy curriculum with cosmetic changes applied.

AI Assistant

PrepScholar's new AI Learning Assistant (which costs $98 but includes unlimited conversations) gives students round-the-clock access to personalized, expert-level support without the cost or scheduling constraints of traditional tutoring. Trained on proprietary, expert-built resources rather than generic data, the assistant goes beyond simply checking answers. Instead, it works more like a real instructor, asking guiding questions to pinpoint where a student's reasoning broke down and reinforcing the underlying skill so they can apply it correctly next time.

This approach is especially valuable on the ACT's trickiest, trap-laden questions, where generic AI chatbots tend to fall short; because PrepScholar's assistant is built specifically around test-prep strategy and high-difficulty content, students learn not just content mastery but the strategic thinking needed for top scores.

For self-motivated students looking to break through a score plateau, the AI Learning Assistant offers a cost-effective middle ground between self-study and private tutoring by delivering personalized feedback at any hour, from any device, at a fraction of the price of one-on-one instruction.

Adaptive Personalization

No other self-paced program besides PrepScholar in this comparison offers genuine adaptive learning. PrepScholar's system identifies strengths and weaknesses from the first diagnostic quiz, then recalibrates constantly as students work through lessons and practice sets. Rather than progressing through a fixed curriculum in a fixed sequence, students are routed toward the specific skills most likely to yield the highest composite gain.

This matters especially for the Enhanced ACT's new format. With fewer total questions per section, each point of gain requires more precise preparation. Generic curricula that treat every student identically aren't equipped to provide it.

Score Guarantee

PrepScholar guarantees a minimum 4-point composite score improvement, which is the most specific guarantee in the self-paced ACT prep category. Students currently scoring below 31 on the ACT are guaranteed at least a 4-point improvement, and those already scoring 31 or higher are guaranteed at least a score of 34. If not, the cost of the Complete Online Prep Program is fully refunded.

This stands in contrast to the "Higher Score Guarantees" offered by competitors, which commit to no specific number of points. Under the terms of those guarantees, a single-point improvement satisfies the obligation. PrepScholar's guarantee requires demonstrable, meaningful progress.

Magoosh offers a 4-point guarantee as well, but only for students scoring 30 or below at baseline.

Parent Accountability Tools

PrepScholar includes parent-facing progress reporting and SMS reminders, features unavailable on any other self-paced platform in this comparison. Parents can monitor session consistency and skill mastery without having to ask their student for updates.

Who Should Use PrepScholar?

Best for: Students targeting a 27 or above who need content depth, structure, and a guarantee that requires real improvement. Students navigating the Enhanced ACT for the first time who want a curriculum purpose-built for the new format. Parents who want visibility into their student's progress without hover-parenting.

Not ideal for: Students looking exclusively for the cheapest available option. Students who won't engage consistently with a self-directed online program.

Kaplan: Best for Official ACT Questions

Price: $179 | Score Guarantee: None

Kaplan has a unique spot in the ACT prep market. As an official ACT teaching partner, Kaplan is the only prep company with access to real, previously used ACT questions and full-length tests straight from the exam's creators. No other program in this comparison can claim that.

The self-paced course at roughly $180 includes 35 on-demand video lessons, 2,000+ practice questions, and 3 official full-length ACT practice tests.

However, there are limitations. Kaplan has no score guarantee, just a note that the "average" student who purchases both the self-paced online prep course and attends their full set of ACT classes improves an average of 4 points. However, there's no guarantee behind this, and it doesn't apply to students who only do a self-paced online course.

There is also no adaptive learning, no parent progress reporting, and no mechanism for personalized routing. Kaplan also updated its curriculum for the Enhanced ACT, but they haven't published the scope of their changes with the same transparency as PrepScholar's rebuild.

Who Should Use Kaplan?

Best for: Students who want the only self-paced program with access to real, officially sourced ACT questions. Budget-conscious students who want a paid, structured course from a trusted brand. Students who are strong self-studiers and don't need adaptive guidance.

Not ideal for: Students who need personalized routing or accountability tools. Students looking for a meaningful point-based score guarantee.

Khan Academy: Best Free ACT Prep Option

Price: Free

Khan Academy is the strongest free ACT prep option available in 2026. Its content is well-organized, its interface is clean, and it costs nothing. This combination makes it the logical first stop for any budget-conscious student.

One important distinction from the SAT side: Khan Academy holds an official partnership with the College Board, the organization that creates the SAT. It has no partnership for the ACT. That means Khan Academy's ACT content, while high quality, isn't developed by the exam's creators, and it doesn't have the same official legitimacy as its SAT materials. Students looking for official ACT questions are better served by ACT.org's own prep offerings or Kaplan's exclusive official-question library.

Khan Academy's platform is not adaptive, and it doesn't offer a score guarantee. For students building skills from a low baseline and working with limited resources, it's a legitimate starting point. For students who have already plateaued or who are targeting a composite above 28, a paid program with deeper content and adaptive routing will produce better results.

Who Should Use Khan Academy?

Best for: Self-motivated students with no prep budget. Students building basic skills before buying a paid course. Students who wantadditional reading and math practice for free.

Not ideal for: Students targeting competitive scores (28+). Students preparing specifically for Enhanced ACT format and timing. Parents who want accountability tools.

Princeton Review: Best for Practice Question Volume

Price: ~$299 | Free Trial: 7-day refund window | Score Guarantee: None

Princeton Review's self-paced ACT course is one of the more content-dense options in the budget tier with "thousands" of practice questions and 5 full-length tests. The program includes extensive video lessons, performance tracking, and a personalized study plan. Its brand name carries weight with parents who grew up taking standardized tests in an era when Princeton Review and Kaplan were the only options.

However, Princeton Review comes up short for most people when they look deeper. For one thing, Princeton Review's online ACT prep program isn't part of its "higher score" guarantee, so students using Princeton Review for self-paced ACT prep have no guarantee whatsoever of a higher score.

Additionally, Princeton Review has updated its curriculum for the Enhanced ACT, but the extent of those changes isn't explained on their website, so it's unclear if the materials were truly updated or underwent basic surface-level changes that don't actually reflect what the Enhanced ACT is like.

Who Should Use Princeton Review?

Best for: Students who want a budget option with a larger question bank. Students who prefer a recognizable brand name. Students who want the longest withdrawal window before committing.

Not ideal for: Students who need adaptive personalization. Students who want a score guarantee.

Magoosh: Good for Students with Limited Time

Price: $129 | Free Trial: 7 days | Score Guarantee: 4 points

Magoosh has built its reputation around affordability. The platform includes practice questions, video lessons, study schedules, and mobile-friendly tools. The mobile app is well-designed, and the interface generally earns high marks from reviewers for ease of use.

Students frequently praise the platform's video explanations and mobile experience. The company also offers a score guarantee for eligible students (those currently scoring 30 or lower). At $129, Magoosh is also one of the cheapest ACT prep options.

However, Magoosh's 1,500 practice question library is also the thinnest of any paid option in this comparison. It's enough for students building foundational skills but insufficient for anyone trying to exhaust a large practice bank while drilling a specific section.

Magoosh has updated its lessons and practice questions for the Enhanced ACT, but like Kaplan and Princeton Review, the scope of that update is not clearly specified.

Overall, Magoosh is best for students who don't want to spend hundreds of dollars on prep and who don't plan on taking a large number of practice problems during that time, either.

Who Should Use Magoosh?

Best for: Budget-first students who still want a paid, structured course. Students who don't need a large number of practice questions.

Not ideal for: Students scoring above 29 (guarantee doesn't apply). Students who require high practice question volume for elite score targets.

What Should You Look for in an ACT Prep Online Course?

Enhanced ACT Alignment

This is the factor that matters most in 2026. A prep program that hasn't rebuilt its curriculum to reflect the changes to the Enhanced ACT isn't preparing students for the test they'll actually take.

Look specifically for programs that have updated their Math question sets for the four-choice format, revised their timing strategies to match the shortened section lengths, and addressed the Science-optional decision for students who are unsure whether to include it.

Score Guarantee

A guarantee reveals how confident a company is in its own results. The key distinction is between specific and vague:

A specific guarantee (like PrepScholar's 4-point guarantee) commits to a measurable outcome. If that threshold isn't met, you get your money back.

A vague "higher score" guarantee technically requires only a one-point improvement to satisfy the terms — which is not meaningful prep validation.

Content Volume

The minimum a serious prep program should include:

• At least 4 full-length practice tests in Enhanced ACT format
• At least 2,000+ practice questions
• Organized instructional content, not just a question bank

Only PrepScholar and Princeton Review exceed the question threshold comfortably. For students targeting a 30 composite or above, content exhaustion is a real risk on any program that doesn't offer at least 2,000+ questions.

Adaptive Personalization

A student scoring a 21 composite and a student scoring a 27 composite do not share the same gaps. Adaptive learning routes each student toward the specific content most likely to raise their score rather than putting everyone through the same fixed sequence. Of the five programs reviewed here, only PrepScholar offers this.

The Science Section Decision

One of the most practically important questions under the Enhanced ACT is whether your student should take the optional Science section. Prep programs differ in how they handle this. PrepScholar's updated curriculum gives students the option to opt out of Science prep entirely if they're not planning to include it. Confirm whether any program you're evaluating offers this flexibility.

Frequently Asked Questions: ACT Prep Online Courses

What's the most important thing to look for in an ACT prep course in 2026?

Enhanced ACT alignment is the most critical factor right now, because the exam changed significantly in 2025. Beyond that, the most important features are adaptive personalization, a meaningful score guarantee, sufficient content volume (at least 4 full-length practice tests, at least 2,000+ questions), and clear guidance on the Science-optional decision.

What is the best free ACT prep course?

Khan Academy is the strongest free option for general academic skill-building, but it does not have an official partnership with ACT Inc. the way it does with the College Board for the SAT. Students who want officially sourced ACT questions should use ACT.org's free resources or consider Kaplan's official-partner materials.

What is the best paid ACT prep online course in 2026?

PrepScholar is the best paid self-paced ACT prep course in 2026, based on content volume, Enhanced ACT rebuild depth, adaptive personalization, score guarantee specificity, and parent accountability tools.

Does PrepScholar's content reflect the Enhanced ACT?

Yes. PrepScholar is the only self-paced program in this comparison that rebuilt its ACT curriculum from the ground up for the Enhanced ACT. That includes 54 refreshed skill lessons, new math questions written specifically for the four-choice format, updated timing strategies, and a redesigned practice interface that mirrors the new section lengths and pacing.

Should I take the ACT Science section?

It depends on your target schools and your goals. The Enhanced ACT's composite is calculated from English, Math, and Reading only — Science no longer factors in. For STEM applicants or students targeting schools that specifically value a Science score, taking it may strengthen the application. For others, opting out reduces test length and fatigue. PrepScholar's updated curriculum allows students to opt out of Science prep if they don't plan to take it.

Can parents track their student's ACT prep progress?

Among the programs in this comparison, only PrepScholar includes parent-facing progress reports and SMS reminders. No other self-paced platform offers this feature, which makes PrepScholar the clear choice for families where parental involvement is part of the prep structure.

Is PrepScholar worth the cost compared to Kaplan?

Kaplan's exclusive ACT partnership and access to real exam questions is a genuine differentiator at a lower price point. However, Kaplan's self-paced course does not offer adaptive personalization, parent accountability tools, a point-based score guarantee, or a curriculum rebuilt with PrepScholar's specificity for the Enhanced ACT. For students who are strong independent learners primarily interested in accessing official questions, Kaplan is a legitimate option. For students who need adaptive personalization and structured accountability, PrepScholar delivers significantly more.

Which test prep companies include an AI tutor?

PrepScholar is one of the only test prep companies to offer a true AI tutor as part of its program. Unlike generic AI chatbots that some competitors rely on, PrepScholar's AI Learning Assistant is trained on proprietary, expert-built content and designed to teach underlying skills rather than just hand over correct answers—asking follow-up questions to diagnose where a student's reasoning broke down, similar to a real instructor. It's included with a PrepScholar account and available 24/7, giving students personalized, adaptive support without the cost of one-on-one tutoring.

Final Verdict: The Best ACT Prep Online Course in 2026

Best Overall: PrepScholar. The only adaptive self-paced platform, the biggest content library, the only program rebuilt from the ground up for the Enhanced ACT, and the only one with parent accountability tools. The 4-point guarantee with a full refund promises real improvement.

Best Free Option: Khan Academy. The right starting point for budget-limited students building foundational academic skills. Note: unlike its SAT partnership with the College Board, Khan Academy has no official relationship with ACT Inc., so its ACT content doesn't carry the same source legitimacy.

Best for Official Questions: Kaplan. The only prep company with access to real, previously used ACT questions through its official ACT teaching partnership.

Best Budget Paid Option: Magoosh. Video lessons, clean interface, and a solid four-test practice library for $129.

Best Practice Question Volume: Princeton Review. The largest question bank of any competitor below PrepScholar's price point, with approximately 2,700 questions and 5 tests. The lack of a score guarantee and limited transparency around its Enhanced ACT updates hold it back from a higher ranking.

For most students in 2026, especially those navigating the Enhanced ACT for the first time, targeting a composite above 29, or preparing with parental support, PrepScholar is the clearest choice. No other self-paced program combines adaptive personalization, Enhanced ACT rebuild depth, and a specific refund-backed guarantee in a single package.