Teachers' Day is observed in Mexico every May 15, a day dedicated to appreciating the work of teachers. The holiday was established by the Mexican Congress in 1917, with the first celebration taking place in 1918. The date was chosen for two possible reasons: it marks the birthday of a beloved teacher named Isidore, celebrated by students in San Luis Potosí, or it commemorates a historic event in Querétaro from May 15, 1867. On this day, many schools pause their regular activities to organize cultural events that highlight the importance and dignity of teachers. However, the level of celebration varies, as some schools may not hold any events, while others may take the day off. Teachers' Day in Mexico should not be confused with World Teachers' Day, which occurs on October 5.