Playoff divisions are mainly based on enrollment (qualifying teams are ranked top to bottom). However, some are manipulated for equity. For example, St. Mary's is at 907 but D1 and Central Catholic is 369 but can be no lower than D3. Granite Bay is in D2 playoffs with a higher enrollment than Stagg who is in D1 playoffs. There are teams that can be no lower than D2 regardless of enrollment - Grant, Atwater, Johansen, Golden Valley, Beyer, Buhach Colony, Del Oro, McNair, Grace Davis, Wood and St. Mary’s. FYI, the SFL is a D1 league with these enrollments: Oak Ridge 2400, Woodcreek 2200, Folsom 2200, Granite Bay 2100, NU 1980, Rocklin 1841 and DO 1695 (the latter qualifying for D3 by enrollment, but must be D2 as declared by SJS).