Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| School | Location | Mascot | Enrollment 12-13 | IHSAA Class | IHSAA Class Football | County | Year Joined | Previous Conference |
| --- | --- | --- | --- | --- | --- | --- | --- | --- |
| Beech Grove | Beech Grove | Hornets | 819.0 | AAA | AAA | 49 Marion | 2005.0 | Mid-State |
| Cardinal Ritter | Indianapolis | Raiders | 532.0 | AA | AA | 49 Marion | 2005.0 | Independents |
| Lapel * | Lapel | Bulldogs | 439.0 | AA | A | 48 Madison | 2009.0 | White River |
| Lutheran | Indianapolis | Saints | 212.0 | A | A | 49 Marion | 2009.0 | Independents |
| Park Tudor | Indianapolis | Panthers | 423.0 | AA | AA | 49 Marion | 2005.0 | independent |
| Scecina Memorial | Indianapolis | Crusaders | 340.0 | AA | A | 49 Marion | 2005.0 | Rangeline |
| Speedway | Speedway | Sparkplugs | 493.0 | AA | AA | 49 Marion | 2010.0 | West Central |
| Triton Central | Fairland | Tigers | 510.0 | AA | AA | 73 Shelby | 2012.0 | Mid-Hoosier |
Question:
Which year did park tudor school join IHSAA class AA?
Answer:
2005.0