I work at a K-12 school and had a similar experience working in a school. The teacher complained the Smartboard touch capability wouldn't work in the morning, b

I work at a K-12 school and had a similar experience working in a school. The teacher complained the Smartboard touch capability wouldn't work in the morning, but worked in the afternoon. I said nonsense. Went in there and surely it didn't work, but I noticed a bit of a glare from the reflection of the light on the window. I asked her to turn down the shade and the Smartboard instantly started working... felt awesome lol.