The fifteen corridors, ranked

Ranked by how many credentialed K-12 teachers actually make each move, computed from two federal datasets. A corridor is one direction of a state pair, because the rules coming back are different rules.

15 of 15 corridors have pages. The rest are ranked and scoped but their destination states' rules have not been read from primary sources yet, so there is nothing here worth publishing about them. We would rather show you a gap than fill it with a summary of somebody else's summary.

#	Corridor	Est. K-12 teachers/yr	ACS 2024 flow	Status	Why it is on the list
1	New York → New Jersey	730	56,799	Published	The highest-volume corridor in the country, and it turns on a single sentence about two years of teaching — plus a grade-band gap between New York’s 5-9 and New Jersey’s 5-8 that nothing bridges.
2	California → Texas	685	77,161	Published	The largest hard corridor. Texas's rules changed on 2 August 2026.
3	New York → Florida	651	50,661	Published	The statutory tier trap: one word in the statute decides between no examinations and three.
4	Texas → California	639	45,447	Published	The two-year experience line decides whether you owe California a full induction programme, and a 10-to-12-week fingerprint queue applies to you purely for living in Texas.
5	Texas → Florida	636	45,259	Published	The same statutory tier test as New York to Florida, but Texas arrives holding a better hand.
6	New Jersey → Pennsylvania	548	38,467	Published	Pennsylvania waives every examination for compact-state teachers and content-tests everyone else. New Jersey is not a compact state, so this corridor pays the difference.
7	New Jersey → New York	513	36,002	Published	New York endorses you at the Initial certificate level whatever you held in New Jersey, and wants three years of public school experience "exclusively" in the subject and grade band you are applying for.
8	California → Nevada	473	53,289	Published	Nevada reciprocates only a non-provisional licence, and California’s first credential is called Preliminary. Nevada’s bands are also far narrower than California’s preschool-to-12 Single Subject authorisation.
9	Florida → Georgia	464	52,371	Published	Florida is a compact member and Georgia is not, and Georgia's own acceptance table names only Florida's Professional certificate. Since 1 July 2026 there is also a literacy assessment nobody who moved before then had to pass.
10	Florida → Texas	463	52,219	Published	Which Florida certificate you hold decides everything, and one of the two is probably disqualifying.
11	Pennsylvania → Florida	392	33,530	Published	A Pennsylvania teacher arrives holding certificates in bands Florida does not issue — PK-4 against Florida’s K-6, and 4-8 against Florida’s 5-9 — and Florida applies a ten-year recency limit to every examination score.
12	California → Washington	390	43,938	Published	Washington accepts a California credential valid or expired, but its checklist still lists two tests, your California scores only help at the first application, and a general Science credential cannot stand alone in Washington.
13	Texas → Colorado	388	27,574	Published	Compact asymmetry, a five-week-old state law, and the Fort Cavazos to Fort Carson military corridor.
14	Virginia → North Carolina	351	28,409	Published	North Carolina’s full licence turns on a signed evaluation from the Virginia school you are leaving, and its military provision lets a spouse teach without ever being issued a North Carolina licence.
15	Virginia → Florida	357	28,901	Published	Virginia’s first licence is a nonrenewable Provisional License issued with allowable deficiencies, and Florida’s no-examination route depends on the word “professional”. Virginia middle education is 6-8 by concentration; Florida’s middle grades are 5-9.

Estimates use the method set out in Teacher migration corridors: the ACS 2024 1-year state-to-state migration flow multiplied by the origin state's K-12 classroom-teacher share of employment (BLS OEWS, May 2025) and the national employment-to-population ratio. Read the absolute numbers as order-of-magnitude and the ranking as reliable.

What decides the order

Volume first, then two documented modifiers. Compact asymmetry: a corridor where exactly one end is an Interstate Teacher Mobility Compact member is where a teacher is most likely to be told something wrong, because the destination's membership is publicised and irrelevant to them. Military-spouse geography: corridors linking large installations carry a deadline-driven population that the compact's own text singles out (Article III(4)).

Two corridors were swapped in on the military modifier and are marked as such in our working notes: Virginia → North Carolina and Virginia → Florida. A friction score per destination state — how hard the path actually is — is not yet in this ranking, and it may reorder the list once it exists.