School co-founded by Albert Einstein in 1918, informally

As a detective, my thought process would begin by breaking down the clue and identifying key words and phrases. The first clue was ‘School co-founded by Albert Einstein‘; this led me to think of schools that Einstein was known to have helped establish. The second part of the clue was ‘in 1918‘, which narrowed down the timeline of the foundation. Finally, the word ‘informally‘ indicated that the answer was likely to be a nickname or abbreviation.

Thinking back to Einstein’s involvement in education, I recalled that he had co-founded a university in Israel. I did some quick research and found that the Hebrew University of Jerusalem was established in 1918, the same year mentioned in the clue. It is also commonly referred to as ‘HEBREWU‘ as an informal nickname.

Putting all of these pieces together, I came to the conclusion that the answer to the crossword clue was ‘HEBREWU‘. All in all, my thought process combined research and knowledge of Albert Einstein’s background and achievements to solve the mystery of the clue.