The coursework is not as comprehensive as it once was and does not on it's own prepare you for everything in the exam, if the Practice Exam and Associate Developer Exam Guide are to be trusted.

I took about 90% of the MongoDB preparatory coursework for an Associate Developer Certification in 2019, but did not complete my coursework because I got hired somewhere and priorities changed. I recently took the modern coursework for the Node Developer path, and the amount and quality of useful information not just for exam prep but for practical use of Mongo is lacking in comparison.

Here are my suggestions:
- Do not give away the answers to the labs before we have made an attempt. Let us write our own query documents, update documents, and aggregation stages, every time. They are currently so simple that they don't really justify their existence as a learning tool, in my opinion.
- The coursework for search indexes is an optional tag-on, though there are references to it in the exam guide. It should be required. The unit also didn't make any mention of autocomplete indexes which came up in the practice test.
- There were never any mentions of geospatial data creation, querying, and indexing in any of the units which is a very powerful feature. This should at least be an optional course.
- Other things never mentioned in modern coursework that someone mongodb certified should probably know, which were mentioned in old coursework: Partial indexes, Multikey indexes, Forcing indexes with hint(), Regular expressions, basic cluster administration, understanding of replica sets and sharding.