tk0.us is an educational resource site created by Mr. K (Thomas Kowalewski), an Apple Distinguished Educator and technology instructor. The site provides curriculum materials, lesson plans, and educational content for middle and high school students in technology, business, computer science, and STEM subjects. It serves educators and students in Tennessee and Illinois.
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Authority
—/100
Safety
90/100
4 of 5 safety checks passed (Sep 5, 2026).
AboutUs has not vetted this site. 1 of 5 automated safety check did not pass. Everything below is what we could measure automatically. Anything you do on the site — paying, sharing personal details, downloading — is between you and the site, not AboutUs.
Current facts
What AboutUs observed today, plus dated entries that carry the year they were recorded. These are measurements, not an endorsement of the site.
We withhold an authority number until independent evidence (global rank, link-graph presence) has accrued. The facts we do have about this site are shown below — we'd rather say “not enough signals yet” than invent a low score.
Safety evidence
Missing DMARC (mild)
Site history
Dated record — historical facts always carry their date.