# Community Social Service (COSER) — Fall 2026 schedule

Merritt College · 8 sections · Seat counts as of 2026-10-18

Source: https://sa.peralta.edu/psc/PCCDCPRD/EMPLOYEE/SA/c/SSR_STUDENT_FL.SSR_CLSRCH_MAIN_FL.GBL

Term dates: Aug 24, 2026 – Dec 19, 2026 (from the sections' dates) · 7 sessions, with dates: /c/merritt-college/schedule/fall-2026/index.json · Academic calendar: https://www.peralta.edu/admissions/academic-calendar-finals-schedule-enrollment-calendar

Course descriptions: 2026-2027 catalog, /c/merritt-college/catalog/2026-2027/courses/coser.md

## COSER 21 — Psychology/Pharmacology of Drugs of Abuse (3 units)

| CRN | Section | Format | Meets | Dates | Instructor | Seats |
| --- | --- | --- | --- | --- | --- | --- |
| 42904 | 42904 | In person | Wed 1:30–4:20pm, Merritt-P 307 | Aug 24–Dec 19 | Marlo Ornelas | Closed |
| 42905 | 42905 | In person | Thu 6:00–8:50pm, Merritt-P 307 | Aug 24–Dec 19 | Biancca Patterson | Closed |

## COSER 26 — Case Management for Substance Abuse Paraprofessionals (3 units)

| CRN | Section | Format | Meets | Dates | Instructor | Seats |
| --- | --- | --- | --- | --- | --- | --- |
| 42914 | 42914 | In person | Tue/Thu 4:00–5:15pm, Merritt-P 307 | Aug 24–Dec 19 | Richard Santana | Closed |

## COSER 29 — Working with Diverse Populations (3 units)

| CRN | Section | Format | Meets | Dates | Instructor | Seats |
| --- | --- | --- | --- | --- | --- | --- |
| 42908 | 42908 | In person | Wed 6:00–8:50pm, Merritt-P 307 | Aug 24–Dec 19 | Richard Santana | Closed |
| 42909 | 42909 | In person | Sat 10:00am–12:50pm, Merritt-P 307 | Aug 24–Dec 19 | Jose Murillo | Closed |

## COSER 42 — Counseling Skills and Substance Abuse (3 units)

| CRN | Section | Format | Meets | Dates | Instructor | Seats |
| --- | --- | --- | --- | --- | --- | --- |
| 42911 | 42911 | In person | Tue 6:00–8:50pm, Merritt-P 307 | Aug 24–Dec 19 | Marlo Ornelas | Closed |
| 42912 | 42912 | In person | Sat 1:30–4:20pm, Merritt-P 307 | Aug 24–Dec 19 | Biancca Patterson | 11 of 45 open |

## COSER 476C — Work Experience in Community Social Services/Substance Abuse (1-4 units)

| CRN | Section | Format | Meets | Dates | Instructor | Seats |
| --- | --- | --- | --- | --- | --- | --- |
| 42913 | 42913 | In person | Mon 6:00–7:30pm, Merritt-P 103 | Aug 24–Dec 19 | Biancca Patterson, Marlo Ornelas | 13 of 55 open |