Teachers say the evaluations, which compare educator performance nationwide, are poorly designed and ignore the teaching methods, curriculums and resources in rural areas.
Main Reforma avenue has been closed by the protesters.
There are 21 people under arrest, according to the authorities.
Rubén Núñez is accused of financial operations involving resources derived from illicit sources.
Vehicular chaos is expected to ensue.
More than 1,000 officers are keeping them contained in midtown.
A group is also arriving from the State of Mexico.
They are currently in front of the Ministry of Education.
The dissident teachers caused vehicular chaos in Mexico City.
They are protesting against the educational reform.