The following school districts have opted into Phase 1 of Direct Admit Wisconsin. This list will continue to grow as additional schools opt in.
| School District |
|---|
| Oak Creek Franklin Joint School District |
| Oconomowoc |
| Oconto Falls School District |
| Oconto Unified School District |
| Oostburg School District |
| Oregon School District |
| Osceola School District |
| Oshkosh Area School District |
| Osseo-Fairchild |
| Osseo-Fairchild School District |
| Osseo-Fairchild School District |
| Owen-Wtihee |
| Palmyra-Eagle Area School District |
| Pecatonica Area School District |
| Pewaukee School District |
| Pius XI Catholic High School |
| Platteville School District |
| Plum City School District |
| Plymouth Joint School District |
| Port Edwards School District |
| Port Edwards School District |
| Port Washington-Saukville School Distri |
| Portage Community School District |
| Poynette |
| Prairie Farm |
| School District |