Unit 0: The Research Study Challenge
A free Unit 0 activity built on 22 real studies, experiments and headlines. Five leveled science practice questions per case, and students grade their own work before they turn it in.
Level Up Your Studies With Mr. Sinn
Whether you're a student preparing for the AP exam or a teacher planning your next lesson, Mr. Sinn has you covered. Students get the tools, practice, and support they need to earn an A in class and a 5 on the AP exam. Teachers get lessons, worksheets, assessments, and resources that are ready to use, saving time and strengthening instruction.
How Students Score
Every year we ask students what they got. Here's what they told us.
- 99% passed the exam scored a 3 or higher
- 68% scored a 5 the top score
- 4.6 average score out of 5
- 95% would recommend it to a friend taking the course
Students Who Used The Ultimate Review Packet & Exam Slayer
99% scored a 3 or higher
2026 AP National Exam Score Distributions
66% scored a 3 or higher
Mr. Sinn figures are based on self reported AP scores from past Ultimate Review Packet & Exam Slayer students. National figures are College Board's 2026 score distributions for the selected course.
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AP Human Geography
AP Psychology
Notes From Students & Teachers
See what past students and teachers are saying.
"I failed my class final for AP Human Geo and realized I had to really study if I wanted to pass the AP exam. I found and purchased the URP, then studied my butt off the last two weeks leading up to the exam. My teacher thought I would fail, and I got a 4. The URP is the greatest thing ever created."
"I taught AP Psych for the first time with very little support from my school, so I bought the URP for all my students. Ten of them scored a 5, and five scored a 4."
"The packet is the holy grail if you want to score well on the AP Psychology exam. The videos and quizzes are a lifesaver."
Would They Recommend It?
We asked every student whether they'd tell a friend taking the course to use the packet.
95%
of students would recommend the Ultimate Review Packet to a friend taking their AP course.
Nearly 3 in 4 said they strongly agree.
Each square is 1 student in 100
- Strongly agree 74.0%
- Agree 21.4%
- Disagree 1.8%
- Strongly disagree 2.8%
From the Ultimate Review Packet student surveys.
From the Blog
Study tips, exam strategies, and notes from the classroom.
The Summer 2026 Case Files: AP Psychology
A free, no-login lesson built on 24 real news stories from the summer of 2026. Students pick their cases off a unit map and start thinking like psychologists before you have taught a single unit.
The Summer 2026 Case Files: AP Human Geography
The same lesson, built for geography. Twenty-four summer news stories on a world map, each one carrying the CED concepts students need before they answer a single question.
Ready to Level Up?
Join the students who walked into the exam knowing they were ready.