The current Waltham High School was finished being constructed in 2024.

[5] The school was originally slated to open for the 2020-21 school year before numerous issues in the site plan, acquisition, design and construction processes shifted the opening date back.

[6] In 1906 and 1907, the Waltham football team was undefeated, although there was no organized playoff structure.

The school previously also had a lower-level mixed-gender group, "Music Odyssey".

[11] The program hosts an annual competition, the Eastern Show Choir Festival.