Rosh Hashanah is the Jewish New Year.
Rosh HaShanah translated from Hebrew means "the head of the year". It is the holiday for the start of the new year on the Jewish calender.
No. The Sabbath is a weekly holiday that occurs from Friday at sunset until Saturday at sunset. Rosh Hashanah is a major holiday or festival, and occurs on the 1st day of the 7th month of the Jewish (lunar) calendar. If the 1st day of the 7th month is a Saturday, then Rosh Hashanah is also on the Sabbath.
In the United States, most schools are not closed on Rosh Hashanah. In countries such as Israel they might be closed. Rosh Hashanah is an important Jewish celebration and the population of Israel is largely Jewish.
Rosh Hashana is the only Jewish holiday that is two days long both in and out of Israel. See the question "why does rosh hashanah last for two days"
Jewish New Year
Rosh Hashanah
PASSOVER is the Jewish holiday celebrated unanimously with a Seder, which is an organized prayer, social interaction, and meal. In the Mizrahi Jewish Communities, there is often also a seder for Rosh Hashanah.
According to Jewish tradition, God judges the world on Rosh Hashanah.
Rosh Hashanah is a Jewish holiday when they eat sweet things (not junk food of course), like apples and honey. They eat apples and honey to symbolize a sweet year and to give them joy and happiness.
Rosh Hashanah and Yom Kippur.
Rosh Hashanah and Yom Kippur.