I went to high school in England and did GCSE Spanish, although parts of the course were modified/cut out because it was during lockdown, and the government said we didn’t have to do the official exams. Personally in my class, learning a whole paragraph by heart was seen by teachers as the desperate option, and it wasn’t encouraged. In Year 9 (students around 14 yrs old i think) we did a year of Spanish to get a feel for the language if we wanted to do it at GCSE, but we still had to do a Spanish end of year exam, so people who weren’t going to study it further would try and memorise a paragraph just to make ends meet and get a decent grade from the exam. However, what I also remember is my friend memorising a generic paragraph that she thought would work, only for the exam question to be different which basically ruined her answer because it had nothing to do with the question, and she couldn’t salvage it because she had no actual knowledge of the language. So based on that I’d also say that learning a paragraph just to get a good grade is risky because you can never guarantee the question in the exam, and as far as I’m aware in GCSEs and A-Levels the exam boards make up new questions for every year