Looking for a window into schools’ technology plans? Great insights abound in K-12 applications for the federal E-rate program.

The E-rate, which provides discounts for Internet connectivity and telecommunications services in schools and libraries, received a sweeping overhaul in 2014 and major boost in funding in early 2015, increasing the program’s funding cap from $2.4 billion to $3.9 billion.

The Federal Communications Commission’s upgrade of the program is meant to improve schools’ and libraries’ Internet connectivity for years to come. Among the new policies …