TransfermaticOCC registration dates

    Which Classes Fill Up Fastest at Orange Coast College?

    In Fall 2026, 65% of OCC’s 1,945 class sections filled up. The classes most likely to be full were BIOL A221, CHEM A180 and BIOL A220.

    At their longest, waitlists across OCC’s sections added up to 124,987 spots.

    In-person and online sections filled at about the same rate (65% vs 66%).

    The 30 classes that fill up fastest at OCC

    1. 1.BIOL A221 Anatomy-Physiology
      14 of 14 sections full · 27,946 on waitlists
    2. 2.CHEM A180 General Chemistry A
      13 of 13 sections full · 11,810 on waitlists
    3. 3.BIOL A220 Human Anatomy
      7 of 7 sections full · 8,487 on waitlists
    4. 4.CHEM A130 Preparation for Gen Chemistry
      14 of 14 sections full · 7,128 on waitlists
    5. 5.WELD A101 Arc & Oxy-acetylene
      3 of 3 sections full · 6,268 on waitlists
    6. 6.BIOL A210 General Microbiology
      5 of 5 sections full · 6,215 on waitlists
    7. 7.PHYS A185 Calculs Based Physics:Mech w/L
      8 of 8 sections full · 5,907 on waitlists
    8. 8.BIOL A180 Intro to Bio for Majors 1
      6 of 6 sections full · 4,422 on waitlists
    9. 9.CHEM A110 Introduction to Chemistry
      6 of 6 sections full · 2,909 on waitlists
    10. 10.BIOL A225 Human Physiology
      4 of 4 sections full · 2,764 on waitlists
    11. 11.PHYS A280 Calc Based Phys:Elec/Mag w/Lab
      5 of 5 sections full · 2,270 on waitlists
    12. 12.ENGL C1001 Critical Thinking and Writing
      4 of 4 sections full · 2,040 on waitlists
    13. 13.PHYS A120 Algebra-Based Physics 1
      3 of 3 sections full · 1,948 on waitlists
    14. 14.CHEM A185 General Chemistry B
      4 of 4 sections full · 1,554 on waitlists
    15. 15.ENGL C1000 Academic Reading and Writing
      82 of 82 sections full · 1,350 on waitlists
    16. 16.WELD A201 Advanced Welding
      2 of 2 sections full · 1,170 on waitlists
    17. 17.CA A124 Principles of Baking 1
      3 of 3 sections full · 1,133 on waitlists
    18. 18.WELD A116 Arc/Oxyacetylene Weld Prac 2
      3 of 3 sections full · 468 on waitlists
    19. 19.WELD A215 Arc/Oxy Welding Lab Lvl 1
      2 of 2 sections full · 451 on waitlists
    20. 20.WELD A115 Arc & Oxy Weld Pract Level 1
      3 of 3 sections full · 365 on waitlists
    21. 21.ART A151 Ceramics 2
      2 of 2 sections full · 213 on waitlists
    22. 22.COMM C1000 Introduction Public Speaking
      51 of 51 sections full · 191 on waitlists
    23. 23.ENGL C1003H Crit. Thinking/Writing: Lit(H)
      3 of 3 sections full · 159 on waitlists
    24. 24.CA A120 Culinary Principles 1
      4 of 4 sections full · 156 on waitlists
    25. 25.ENGL C1003 Critical Thinking/Writing: Lit
      16 of 16 sections full · 150 on waitlists
    26. 26.WELD A216 Arc/Oxy Welding Lab Lvl 2
      2 of 2 sections full · 141 on waitlists
    27. 27.PSYC C1000 Introduction to Psychology
      11 of 11 sections full · 140 on waitlists
    28. 28.BIOL A185 Intro to Bio for Majors 2
      4 of 4 sections full · 129 on waitlists
    29. 29.ACCT A101 Financial Accounting
      6 of 6 sections full · 121 on waitlists
    30. 30.POLS C1000 American Government & Politics
      13 of 13 sections full · 119 on waitlists

    Only classes with two or more sections are ranked. The waitlist number adds up each section’s waitlist at its longest, so a student waiting on two sections counts twice.

    How we measured this

    We checked every section in OCC’s Fall 2026 class schedule repeatedly from Tuesday, June 30, 2026 to Tuesday, October 13, 2026. A section counts as full if any check found its enrollment at the seat limit or anyone on its waitlist. Cancelled sections and sections without a seat limit are left out. Classes that filled before our first check still count, because they were still full when we looked.

    Questions students ask

    What classes fill up fast at OCC?

    In Fall 2026, the classes most likely to be full at OCC were BIOL A221 (Anatomy-Physiology), CHEM A180 (General Chemistry A), BIOL A220 (Human Anatomy), CHEM A130 (Preparation for Gen Chemistry) and WELD A101 (Arc & Oxy-acetylene). Overall, 65% of OCC’s class sections filled up.

    How do I get into a full class at OCC?

    Get on the waitlist as soon as you can, check your email through the first week for a permission number or add code, and go to the first class meeting. Instructors often add waitlisted students who show up, as other students drop.

    When should I register at OCC to get the classes I need?

    At your registration appointment, the first minute it opens. Spring 2027 registration at OCC opens Tuesday, October 27, 2026 for continuing students. Have a backup section picked for every class on this list.

    Not sure which classes to register for? On our platform, put in OCC and the university you want to transfer to, and you get the classes you need, semester by semester. Build your class plan.