Lemon Grove Field (LGAM - Lemon Grove Academy Field)- 3131 School Lane, Lemon Grove, 91945. Gate to the right of the red doors will be open. Walk through here towards the basketball courts. Sometimes the gate on 7866 Lincoln Avenue is unlocked. You can then park in this lot or on the street. Check gate before parking! "PARK HERE" on the map below is actually not parkable. This is the walkway you need to walk down if you park at 3131 School Lane.