"attend courses" is correct and usable in written English.
You can use it when referring to someone participating in a specific course, or series of classes. For example, "John decided to attend courses at the local community college to learn a new skill."
Critical care teams comprise a consultant anaesthetist, a critical care nurse, a flight nurse attendant (paramedic) and a technician, all of whom attend courses designed specifically to accommodate their role within the team.
Men and women attend courses in separate buildings.
I also could attend courses to build on my knowledge and experience while I was there.
In the UK many students are already sponsored by employers to attend courses.
But there are opportunities in universities to gain paid work, present at conferences, attend courses and receive funds for fieldwork.
Judges now have a scientific reference manual, put out by the Federal Judicial Centre (a government agency) to help them, and can attend courses run by the centre.
Her success inspired her to become a learning champion, and she has helped 30 fellow residents, all young homeless people, to attend courses.
His Blackden estate has become a charitable trust; at certain periods, visitors attend courses on writing, music and archaeology at the property.
Mr. LaPierre said the waiting period to attend courses for weapon-carrying permits had jumped to more than two months from two weeks.
Some attend courses with their adult sons to enjoy time together in the kitchen, according to the Ashburton cookery school in Devon.
Many teachers are given the opportunity to attend courses at higher education institutions, where they are fully engaged in the reading of educational literature.
