PROFCOLLE is the trade name for tutoring services provided by Dr. R. Collé in Rockville, Maryland. He has served the needs of students and parents locally (Montgomery County) since 2006, and provides instruction and test preparation in mathematics and physical sciences (chemistry & physics) at all levels from elementary school through college.

Dr. Collé, in addition to his wide range of teaching experience, is an internationally-recognized specialist with nearly forty years of experience in nuclear and radiochemistry, radionuclidic metrology, and the development of standards. He has published approximately 120 research papers. He has been at the National Institute of Standards and Technology (NIST) since 1974 and currently serves as a Research Chemist in the Radioactivity Group of the NIST Physical Measurement Laboratory (Radiation Physics Division) and as Radioactivity Standard Reference Material Coordinator.

Previously, he held research positions at Brookhaven National Laboratory, the State University of New York at Albany, and at the University of Maryland. During a two-year "sabbatical" in Paris (2003-2005), he taught advanced mathematics at a private international school and at the American University of Paris. He received a B.Sc. Chemistry from the Georgia Institute of Technology in 1969, a Ph.D. in Chemistry (Nuclear and Radiochemistry) from Rensselaer Polytechnic Institute in 1972, and a M.S. Adm. (Administration of Science and Technology) from George Washington University in 1979.