1. All appeals filed by the plaintiffs are dismissed.

2. The costs of appeal are assessed against the Plaintiffs.

The purport of the claim and appeal is the purport of the appeal.

1. The reasons why the court in the first instance judgment should explain this case are as follows: ① the part of the 3th 8th th h h h h h h h h h h h h h h h h h h h h h h h h h h h h, and ② the part of the "former Special Act on the Improvement of Teachers' Status (amended by Act No. 13936, Feb. 3, 2016)" is amended to "Special Act on the Improvement of Teachers' Status and the Protection of Educational Activities

(However, the judgment of the court of first instance is justified, so all appeals by the plaintiffs are dismissed. It is so decided as per Disposition by the assent of all participating Justices.