The ABET accreditation criteria document for Computer Science lists some course requirements as
- One year of Science and Mathematics
- At least one half year of Mathematics
- One and one-third years of Computer Science
- At least one year of up-to-date coverage of fundamental and advanced topics
How many courses is one year equivalent to? It may mean 10, going by 5 courses per semester. "One year of X" may mean a year where there is at least one course on X every semester. In either case, "one and one-third years" of courses does not make sense.