studies

My grandfather didn’t have any studies.
My grandfather didn’t have an education.

Use education when referring to the schooling or learning that someone has received: ‘My grandfather didn’t have an education.’ ‘She received a good education.’

Studies refers to the subjects, courses or work involved in studying: ‘She had to pay for her studies.’ ‘He wants to continue his studies.’ ‘She spends a lot of time on her studies.’

See EDUCATION