Conversation so far:
When was Elizabeth Blackwell's pursuit of education?
In 1847, Elizabeth Blackwell left Charleston for Philadelphia and New York, with the aim of personally investigating the opportunities for medical study.
Are there other interesting aspects about Elizabeth Blackwell's education article?
Elizabeth Blackwell also renewed her antislavery interests, starting a slave Sunday school.
Why did Elizabeth Blackwell's school close down?
Elizabeth Blackwell's school was ultimately unsuccessful.

Question: what was her biggest accomplishment/
Self-contained rewrite: What was Elizabeth Blackweel's biggest accomplishment?