〜上 (じょう)
from the standpoint of, in terms of, -ally
Noun + 上 (+ は · の + Noun)
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上 read じょう after a noun means "from the standpoint of" or "in terms of": 法律上、問題はない, "legally, there's no problem". It's like English "-ally" or "for … reasons".
Common combinations: 法律上 (legally), 健康上 (for health reasons), 教育上 (educationally), 立場上 (given one's position), 仕事上 (for work), 計算上 (on paper, by calculation).
Before a noun, it takes の: 健康上の理由, "health reasons". It's formal and compact, common in writing and business.
Compare 的 (N3), which makes a な-adjective (教育的な). 上 marks a viewpoint or area; it isn't an adjective itself. Don't confuse it with 上で (うえで).
Examples
法律上、問題はない。
Legally, there's no problem.
健康上の理由で、仕事を辞めた。
I left my job for health reasons.
立場上、何も言えない。
Given my position, I can't say anything.
教育上、よくない。
It's not good from an educational point of view.
計算上は、これで間に合うはずだ。
On paper, this should be enough.