Adult Education
ESL teachers working in adult education centers earn an average salary of $50,390 each year, or $24.23 per hour, in the U.S., according to a May 2009 salary survey by the Bureau of Labor Statistics. Those in the 25th percentile earn $34,720 each year, or $16.69 per hour. Those in the 75th percentile earn $62,970 per year, or $30.27 per hour.

Maryland Adult Education
Adult education salaries in Maryland are lower than the national average. Adult education ESL teachers in Maryland earn an average salary of $46,180 per year, or $22.20 per hour. The median hourly wage is $21.76.

Postsecondary
ESL teachers working at the college level earn an average salary of $65,860 per year, according to the BLS. The 25th percentile earns $43,700 per year, and those in the 75th percentile earn $80,900 per year.

Maryland Postsecondary
The average salary of postsecondary ESL teachers in Maryland is $76,920.

Public Schools
Public school ESL teachers earn salaries comparable to regular grade-level or subject teachers. (See Reference 7.) The national average salary for an elementary teacher is $53,150, and for middle school teachers, it is $53,550. The average salary for a secondary teacher in the U.S. is $55,150.

Maryland Public Schools
The average salary for an elementary teacher in Maryland is $61,000, and for a middle school teacher, it is $64,510. For a secondary teacher in Maryland, the average salary is $62,500. An ESL teacher's salary in public schools in Maryland is comparable to the salary range for other public school teachers, according to AllEducationSchools.com.