Here is some info on the Boys programs in our area. I hope this helps.
Modesto SlamnJam https://modestoslamnjam.com/
Central Valley Hornets (Salida) http://cvhornets.com/
Salida Youth Basketball https://www.htosports.com/teams/?u=SYBL&s=basketball
Modesto Youth Basketball https://www.modestoyouthbasketballleague.com/
Stanislaus County PAL (Police Activities League) https://www.stancopal.org/Default.aspx?tabid=2306131
Stanislaus Rebels (Oakdale) https://tshq.bluesombrero.com/Default.aspx?tabid=2426963
Riverbank Youth League Jeff Jennings firstname.lastname@example.org
A new facility just opened in Manteca. Check out their programs. https://www.courtsidesportsmanteca.com/
Also check into MJC Athletics and Stanislaus State Athletics for Summer Camps for boys and girls ( websites below).