From Section 2.2.5 of the USA Fencing Athlete Handbook

2.2.5 How to Determine Classifications for Foreign Fencers

1. If the fencer is listed on the FIE World Rankings during the past four years, FIE points will be considered in order to determine a classification for the competition being seeded:

a. Award an “A” classification for one FIE 1st – 8th place finish in which FIE points were earned. The year suffix would be the year in which points were earned.

b. Award a “B” classification for one FIE 9th – 16th place finish in which FIE points were earned. The year suffix would be the year in which points were earned.

c. Award a “C” classification for one FIE 17th – 32nd place finish in which FIE points were earned. The year suffix would be the year in which points were earned.

d. Award a “D” classification [to be applied for competitions other than Division I] for one FIE 33rd –64th place finish in which FIE points were earned. The year suffix would be the year in which points were earned.

2. If a fencer is not listed on the current FIE World Rankings, but has been on a World Senior Team or Pan American Games team, a “B” will be awarded. If the team was a World Cadet or World Junior team, then a “C” will be awarded. The year suffix would be the year in which fencer was on such a team. If that information is not available then assign the year as the earliest year for the current season, viz., for the 2012-2013 season that means the year would 2009.

3. If the fencer has not been a World Team member, but is a member of the country’s national team, a “C” classification will be awarded. Similarly, if the fencer has been entered into the tournament by his fencing federation a “C” classification can be used. In both cases, the year suffix would be the current year.

4. If nothing is known about the fencer and the National Weapon Coach for that weapon does not know anything about the fencer, the “D09” classification should be used. In the case of NAC Division I, however, foreign fencers should be classified as “C” with the earliest year; for the 2012-2013 season, this classification would be a “C09.”

5. When a classification has been assigned to a foreign fencer, the National Weapon Coach for that weapon should be consulted to determine its appropriateness for that tournament. If the National Weapon Coach does not respond, assume that the classification is acceptable.