  Diversity has an important, multifaceted role in the success of education. I
have used a corpus analysis of the first ten years of Physical Review Physics
Education Research to investigate the diversity, broadly defined, of physics
education research. The results show that the physics education research
community has extensively investigated the diversity of physics students,
especially with respect to gender. However, some less visible but still
numerous groups of students are little studied. On the whole, the contents of
Physical Review Physics Education Research reveals a robust research community
in physics education, but there is room for growth with respect to working with
different kinds of students and the interactions between student attributes and
teaching methods.
