MsRazz

Instructional Coach | Curriculum Designer | CP, H and AP Chemistry Teacher | My favorite scientists are my students.

[MsRazz @MsRazzChemClass]

Find Out Why Teachers Trust PASCO! - PASCO Blog https://t.co/PDVGmZ4wOQ #pasco-scientific

Recognize a familiar face? 👀

[Jon Bergmann @jonbergmann]

My blog - An Open Letter to My Students about AI has been very well received - here is a version of it on my podcast feed: https://t.co/7aSK7HfDTk #edutwitter #edchat #AIinEducation #backtoschool2025 #ReachEveryStudent

[MsRazz @MsRazzChemClass]

@thejasonkantor I've read it, and use so many of the strategies in my own classroom. I also use quotes from it to educate my students on how to help with their own metacognition and reflection strategies. I think it's worth the read!

[MsRazz @MsRazzChemClass]

Teachers, you're amazing! 💛💙 Enjoy 25% off ALL my resources today and tomorrow: https://t.co/XTJzTQdCaJ

[Timothy Keller (1950-2023) @timkellernyc]

Don't let success go to your head. Don't let failure go to your heart.

[MsRazz @MsRazzChemClass]

Know a SCIENCE TEACHER? 💡🧪🧬🔭 Day 1 of the 🌊Summer Science Surge🌊 is HERE - and it’s all about FREEBIES and FREE PD sessions! https://t.co/Tp775C7dSQ⁠ #summersci #TeacherFreebies #iteachscience #sciencepd #chemed #iteachchemistry #STEMteacher #scienceteacher

[MsRazz @MsRazzChemClass]

@kristenvdveen They are very easy on the 👀. And they have wonderful personalities to match!

[MsRazz @MsRazzChemClass]

🧪🐾 Meet My New LAB Partners!🐾🔬

They're already helping me balance equations (okay, maybe not), but they *do* specialize in tail-chasing kinetics and the occasional controlled mess explosion.

#NewLabPartners #ChemistryAndCanines #PeriodicPups #TailWaggingTitrations

[MsRazz @MsRazzChemClass]

💙💛 #chemistryteacher

[Trevor Packer @AP_Trevor]

The 2025 AP Chemistry Exam scores:
5: 17%; 4: 29%; 3: 32%; 2: 16%; 1: 6%

As a reminder, these data only include the results of the AP Chemistry exam taken on the standard testing date, Tuesday, May 6.

Multiple-Choice Questions

This year, the mean number of correct MCQs was 36.99, compared to 35.00 last year, and 33.65 in 2023. On the make-up date this year, for which I have the multiple-choice data (but not yet the free-response data), the mean number of correct MCQs was 35.82. Equating data, which looks at each group’s performance on re-used MCQs, also confirms that this year’s group, on average, was stronger than prior years’ groups, demonstrating stronger chemistry content knowledge and skills, so scores increased.

Setting aside Atomic Structure and Properties (Unit 1), which a massive 34% of AP Chemistry students aced by answering every such question right, students demonstrated strongest mastery of Thermochemistry (Unit 6); 18% earned every point possible for that unit.

By far the most challenging unit for AP Chemistry students was Acids and Bases (Unit 8); 7% of students earned every point possible for this unit, and 6% of students, generally those who are receiving 1s, were unable to answer any question about this unit correctly. So this is a good unit for further focus as next year’s AP Chemistry students and teachers seek to extend AP Chem’s super impressive, multi-year trend of stronger content and skill mastery.

Another rave for the AP Chemistry community: they have pulled off this year’s significant increase in student performance while also expanding this very challenging course to 18,000 more students, overtaking AP Economics to be the subject that has provided the most additional students with access to the learning environments of their classrooms. I hear and share concerns of school administrators rushing AP Chemistry teachers by cutting labs or not providing adequate instructional time, so there are certainly exceptions to the positive trend in performance over time, but it’s good to see that in aggregate, performance is improving alongside increased opportunities.

Free-Response Questions
https://t.co/9bSFBxvgCB

Question 7, the Glycolate question, is psychometrically pristine, the most statistically “perfect” question I’ve yet seen on this year’s exams, which means that each of the 4 points is significantly different in difficulty from every other point, so that the measurement value of the question is high, working well to differentiate between students who should receive 5s, 4s, and 3s. Students who can answer every part of this question are typically receiving an AP 5 for their overall work on the exam; students who can answer all but one part of the question are generally receiving an AP 4; and students who can answer 1-2 parts of the question are generally receiving AP 3s. Students unable to answer any part of this question correctly are typically receiving AP 1s and 2s.

The highest performance on this year’s free-response questions was on Q4, the Methanol and Formaldehyde question. 22% of students earned all 4 points on it.

The most challenging of all this year’s AP Chemistry free-response questions was Q6, the Zn and AI Galvanic Cell question, which identified the most advanced students in the course, generally helping to identify which would receive AP 4s and which would receive AP 5s. 5% of students earned all 4 points on it.

All subjects’ AP score distributions for 2025 will be posted here when available: https://t.co/72wX2xn52R

[MsRazz @MsRazzChemClass]

June 2025 Vlog - End of Year Celebrations! | Teacher Impact - Episode 13 | MsRazz ChemClass | https://t.co/8vd3t22wVU

[MsRazz @MsRazzChemClass]

Just give me a dog and some sunshine... For now, the chemistry can wait. 🐕 ❤️ #woof

[MsRazz @MsRazzChemClass]

Shine on, shine on, chemists. 💙💛 #chemistryteacher #chemed

[MsRazz @MsRazzChemClass]

This brought a much needed smile to my face this morning. Sharing it for anyone else who could use one too. 💙💛 #scienceteacher

[MsRazz @MsRazzChemClass]

Last #APchem lab of the year! Such a simple lab, can you guess what the products are? #chemed

[MsRazz @MsRazzChemClass]

Good morning, X! Two more weeks until #springbreak! Wishing you a fantastic week of engaging phenomena, awesome questions, and beautiful particle models. 🧪 #ScienceTeachers #Monslay

[MsRazz @MsRazzChemClass]

#chemed

[MsRazz @MsRazzChemClass]

🍋A simple phenomena-based approach for teaching about solutions | https://t.co/26DxAXXwwe

[MsRazz @MsRazzChemClass]

Teaching Solutions: A Phenomenon-based Approach | Teacher Impact - Episode 12 | MsRazz ChemClass | https://t.co/26DxAXXwwe
#chemed

[TeacherGoals @teachergoals]

Accurate. 💯
🌐 https://t.co/3qw2SY2yXy