; or (B) children who are eligible for free or reduced price lunches under the Richard B. Russell National School Lunch Act. (6) Mentor teacher The term mentor teacher means a teacher who— (A) is profession-ready; (B) has a minimum of 3 years of teaching experience; (C) is recommended by the principal and other current master and mentor teachers on the basis of— (i) instructional excellence through observations and other evidence of classroom practice, including standards-based evaluations, such as certification by the National Board for Professional Teaching Standards; (ii) an ability, as demonstrated by evidence of student learning in high-need schools, to increase student learning; and (iii) excellent instruction and communication with an understanding of how to facilitate growth in other teachers, including new teachers; and (D) participates in training and ongoing professional development on how to— (i) help teachers learn to improve student achievement; (ii) help teachers learn to improve instruction; and (iii) facilitate mentor-to-mentor collaboration and coaching. (7) Profession-ready The term profession-ready , when used with respect to a teacher, means a teacher who— (A) has completed a teacher preparation program and is fully certified and licensed to teach by the State in which the teacher teaches; (B) has demonstrated content knowledge in the subject or subjects the teacher teaches; (C) has demonstrated the ability to work with students who are culturally and linguistically diverse; and (D) has demonstrated teaching skills, such as through— (i) a teacher performance assessment