That was something common that Reds have higher "modern" educations than other "opposition" groups and partys.
In Iran, many of famous modern writers, artists, etc... were Red, or supported their ways.
In contrast, the "Black" movement, or "religious oposition", were generally educated traditional and old ways.
Some of most famous persons that the "Reds" have provided, are:
Bozorg Alavi, Taqi Arani, Iraj Eskandari, Jafar Pishe-vari, Djalal Al-e Ahmad, Ahmad Shamloo, Samad Behrangi, Houshang Tabari, H. A. Sayeh, Khosrow Golsorkhi, Farrokhi Yazdi, and so many others...