Cool set-up! Reminds me of my elementary school. Picture is just one I found online searching the school. I went there from 2003-2010 (kindergarten through 6th grade) and at the time everything linear was T12, exit signs and recessed cans were magnetic PL, auditorium lights were incandescent or halogen, gym lights were probe start MH, and exterior lighting was all HID. The school was retrofitted in 2013 or 2013. AFAIK the preheat PL cans remained but all the exterior lights replaced by LED, gym lights replaced by 6X F32T8, linear lights retrofitted to T8 (except fixtures in the cafeteria and library, which were replaced because of damage from wear and tear), exit signs replaced with LED.

Note the drop dish diffusers on the 1X4 troffers in the hallway. Those all had two Philips F34T12/CW Econ-o-watt tubes when I had went there. The bulbs used in the T8 retrofits were all Sylvania F32T8/741. The picture is rather recent and shows the hallway after the retrofit. You can tell because the exit signs are a very saturated red color. Fluorescent and incandescent exit signs are not as red since unlike LED signs, the light source isn't red.