u/apcspreddit

Over the last 20+ years I have organized all my lessons and resources and finally built what I wish someone had given me, and I've made it free at CS++ ( csplusplus.com )

What's there

Eight full courses, every lesson free, no card:

• AP CSP, AP CSA, AP Cybersecurity
• Intro to Java, Intro to Python, Intro to Web Design
• CS Foundations, a survey course where students pick JavaScript or Python for the coding units
• HCI Design

74 units total. Real sequenced courses, not link farms.

Also free with any account:

• Editable slide decks for all 74 units. They're .pptx, so PowerPoint, Keynote, and Slides all open them. Organized by concept rather than by day, with actual teaching guidance in the speaker notes instead of bullets read back to you.
• 523 print-ready PDFs. A guided-notes packet and one-page overview for every unit, plus worksheets, activity cards, rubrics, graphic organizers, and reference sheets.
• Browser IDEs. Java, Python, and HTML/CSS/JS with live preview, plus a pseudocode and block editor for CSP. Nothing to install, and student projects sync to their account.
• A GitHub Classroom replacement. Paste a template repo URL and CS++ provisions a private repo per student in your org. Every push runs the autograder and the score lands in the gradebook. Feedback PRs, protected-file detection so you know who edited your tests, and a bulk-import wizard if you're migrating.
• LTI 1.3 for Canvas, Schoology, Brightspace, Moodle, and Blackboard, plus Google Classroom, with grade passback.
• Clever, Google, and Microsoft sign-in, so there's no separate password for you to reset in week two.
• Unlimited classrooms, an assignment builder, one full mock exam or practice final per course (each with a free-response section), 500+ flashcards on spaced repetition, and every released AP CSA FRQ from 2014 to 2025 with rubric self-grading.

Full disclosure on what is optionally paid:

This is my company, not a nonprofit. Free accounts see one small footer ad. A student can pay $9.99 once, not per year, for all 40 mock exams, unlimited AI tutor, and no ads. A paid classroom ($299/yr, one class of up to 40) adds the teacher-only material: 258 answer keys, editable Word versions of every handout, lockdown proctored exams, AI-assisted FRQ grading, and plagiarism detection.