Extracting a subset of records in ArcMap 10

If you are looking to subsample your data by extracting a set number of records (i.e., every sixth record), use the script below in the field calculator of ArcMap 10.

Pre-Logic Script Code:

P=[ID]

i=Int(p/6)-Int((p-1)/6)

[name of field]=

i

The example above will extract every sixth record.