You shall never convert text to outlines. If you have really learned it, then you learned a silly dump wrong thing.
Keep text alive in InDesign.
Converting text to outlines will destroy the editablility, will remove text frame strokes, will remove text frame colors, delete underlines, paragraph rules, strike throughs, automatic bullets and numbers, will cause problems with cross references and automatic text elements on master pages.
If your instructor was teaching that to you, ask for your money back.
If you were told to do it to get around font problems, then I agree with Willi. The real reason for outlining fonts is to do something artistic to a small bit of type—not to get around font licensing issues or prevent hypothetical font compatibility issues that may never be an actual problem. If your teacher told you that this is standard practice, you either misheard, or your teacher is stuck in the past. A good font will embed into the PDF and give no problems to who ever you need to send it to. In addition to what Willi has told you you will lose by outlining type, you won't take advantage of an aspect of font technology called Hinting.
edit: i've noticed a lot of people saying i don't need to create outlines…
Change "don't need" to "shouldn't" and you have some good advise.
Converting all text to outlines was a standard practice that was used in the industry about 10 - 20 years ago, if not longer, before PDFs were standard workflow.
This was when artwork files were being supplied, and to stop the sending of fonts (which is frowned upon) and to ensure the text didn't move, the text was outlined and supplied that way.
It really has no place in a modern workflow. But if you went from an industry role to a teaching role, you may be out of the loop on common practices and PDF workflows.
Yes a teacher must know what they teach, but they must also know why they are teaching it.
If the lessons happened in a cross-over period of the two workflows, which I think lasted about 5 years before people switched entirely.
It's probably still common practice in a lot of countries, with older technologies that don't work well with PDFs, and relying on some sort of PS RIP, or using EPS-F files etc.