95 Nissan Quest won't start

I drove my Quest a few places the other day and it rode fine. Stopped at a friend's house for about 15 minutes. Went to leave and it wouldn't turn over. Interior and exterior lights, radio all work. Towed it home. Pulled the battery and starter. Parts store tested each and both are ok. Checked fuses and they appear fine. Read some troubleshooting sites on the net. Seemed a lot of suggestions to fix it mentioned the ignition switch. Bought one and switched it out. Still doesn't turn over. Tried jumping the starter with a screwdriver but didn't turn over. It spins but doesn't engage. Before you say it's the starter remember i had it tested and other sites threads said they did and it wasn't the starter in the end. Theirs also spun from trying to jump it but the starters were good. The solenoid is attached to the starter and was tested also. Anyone ever had this problem or have any suggestions? Any help would be appreciated as it's my only means or transportation. Thanks