A colleague of mine is preparing certificates for participants in a two-week educational program. Just to be safe, I'll use fake details which are hopefully equivalent to the real ones: let's say this program is an annual event called the Harvard Sentence Construction School, but the exact subtopic changes each year. This year the subtopic is (again, fake detail) prepositional phrases.
We were trying to figure out a way to indicate on the certificate that this particular instance of the program is on the particular subtopic of prepositional phrases within the broader field of sentence construction, without implying that the school covers prepositional phrases every year. The current phrasing is
This certifies that [name] has completed
The 4th Harvard Sentence Construction School
on Prepositional Phrases
I (as a native speaker of English) couldn't come up with anything better, so I turn to you: is there a better way to give the implication we want?
For the certificate we need the text to fit on two lines, so we can't make it very long (actually the real name is shorter than the example I've used above).