Specific subject expertise
Stating that you specialize in 'STEM subjects' immediately tells potential employers your field of expertise. This is especially effective if you're targeting a specific teaching role in a STEM field.
Highlight past experience
Adding the mention of being a tutor at 'University of Chicago' provides a concrete example of your experience and associates your profile with a reputable institution.
Reinforce your job title
Reiterating that you're a 'Teacher' helps with search visibility on LinkedIn. This is particularly useful if you're open to new job opportunities.