This may be what you are taught but reading of the OLD Testament Prophets says otherwise.
What is this "OLD Testament" of which you speak?
The Tanakh supports what I said about the tribes of the northern kingdom.
From all the tribes of Israel, those intent on seeking the LORD God of Israel followed them [the Levites] to Jerusalem, to sacrifice to the LORD God of their fathers. (2 Chronicles 11:16)
[Asa] assembled all the people of Judah and Benjamin and those people of Ephraim, Manasseh, and Simeon who sojourned among them, for many in Israel had thrown in their lot with them when they saw that the LORD his God was with him. (2 Chronicles 15:9)
2 Chronicles 30 describes remnants of the 10 northern tribes being invited to celebrate Passover in Jerusalem during the reign of Hezekiah. in 2 Chronicles 34, during the reign of Josiah,
They came to the high priest Hilkiah and delivered to him the silver brought to the House of God, which the Levites, the guards of the threshold, had collected from Manasseh and Ephraim and from all the remnant of Israel and from all Judah and Benjamin and the inhabitants of Jerusalem (2 Chronicles 34:9)
Lastly, from the Christian scriptures, it is worth noting that the prophetess Anna is reported to have been from the tribe of Asher, and Paul claims to be of the tribe of Benjamin.