The phrase "attendance at classes" is correct and usable in written English.
It can be used when discussing participation in educational settings, such as schools or universities.
Example: "Regular attendance at classes is crucial for academic success."
Alternatives: "participation in classes" or "being present in classes".
Attendance at classes in the sciences and in the professional school appeared to be close to normal.
Some programmes are taught completely online, while others require attendance at classes and practical assessment at nearby campuses.
Mayor Rudolph W. Giuliani gave his trusty pointer a break during his budget speech yesterday and picked a different prop to help deliver a stern lecture to the City University of New York: Take attendance at classes or lose $110 million in city money for community colleges.
The cachet of displaying a sophisticated palate and speaking fluently about complex food and beverages — particularly artisanal products like craft beer, coffee, chocolate, and wine — have boosted attendance at classes on how to buy, prepare, and serve, but most of all appreciate them.
"Her attendance at classes wasn't always the best," Kavanagh said.
Attendance at classes offered at community centers within the housing complex was down by half, the director said.
After four pages of printed "General Rules of the United Methodist Societies" are lists of members and their attendance at class meetings (1839-1844).
Attendance at class meetings is mandatory; unexcused absences are grounds for failing the course, even if one's written work is good.
See dschool.stanford.edu/classes for more information, and students must attend the first day of class Attendance at all class sessions is mandatory.
Overall, attendance at the classes was 50%, with the number of classes attended ranging from zero to 24.
