Text template syntax differences from HTML:

[# th:each="s : ${students}" ]                  ← iteration tag
  ID:    [(${s.id})]                             ← inline expression
  Name:  [(${s.name})]
  Grade: [(${s.letterGrade})]
[/]                                              ← close tag

[# th:if="${s.grade >= 90}" ]                   ← conditional tag
  Status: Excellent
[/]

[# th:unless="${s.grade >= 50}" ]               ← unless tag
  Status: Failed
[/]

Note: No HTML tags! Uses [()] and [# ] syntax instead.