Number of converts: Unknown. Over the last seven years, approximately 1,275 conversions have been certified by conversion courts affiliated with the Rabbinical Council of America, but plenty of Orthodox conversions take place outside the RCA’s system.
Ritual: Approval by a three-judge religious court comprised of three Orthodox men (usually rabbis), male circumcision (or, for circumcised men, symbolic drawing of blood at the place of circumcision) and ritual immersion in a mikvah.
Requirements: Commitment to performing all the Torah’s commandments according to Orthodox interpretations of Jewish law.
Preparation: In most cases, regular study with a rabbi and/or religious mentor.