Пишу Вам как один из них... :)

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Note added at 15 mins (2008-04-23 11:54:42 GMT)
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или personnel - смотря, как Вам надо (амер. или брит.)

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Note added at 17 mins (2008-04-23 11:56:12 GMT)
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имею в виду Academic Personnel

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Note added at 17 mins (2008-04-23 11:56:27 GMT)
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очень редко бывает academic rank personnel. о-очень редко

these are the terms for the teaching staff at universities

"Lecturers" and "instructors" are junior teaching staff, but everybody up to and including a full professor is a "teacher", if indeed they do teach. In the context, nobody's going to think you mean a kindergarten teacher. But if plain "teachers" makes you very uncomfortable, you could write "teaching staff", except that makes the sentence construction more difficult... "members of the teaching staff" or something.

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Acc. to the US Depratment of Labor:
Postsecondary teachers instruct students in a wide variety of academic and vocational subjects beyond the high school level. Most of theses students are working toward a degree, but many others are studying for a certificate or certification to improve their knowledge or career skills. Postsecondary teachers include college and university faculty, postsecondary career and technical education teachers, and graduate teaching assistants. Teaching in any venue involves forming a lesson plan, presenting material to students, responding to students learning needs, and evaluating student progress. In addition to instruction, postsecondary teachers, particularly those at 4-year colleges and universities, also perform a significant amount of research in the subject they teach. They must also keep up with new developments in their field and may consult with government, business, nonprofit, and community organizations.

College and university faculty make up the majority of postsecondary teachers. Faculty usually are organized into departments or divisions, based on academic subject or field. They typically teach several different related courses in their subject—algebra, calculus, and statistics, for example. They may instruct undergraduate or graduate students, or both. College and university faculty may give lectures to several hundred students in large halls, lead small seminars, or supervise students in laboratories. They prepare lectures, exercises, and laboratory experiments; grade exams and papers; and advise and work with students individually. In universities, they also supervise graduate students’ teaching and research. College faculty work with an increasingly varied student population made up of growing shares of part-time, older, and culturally and racially diverse students.