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:
| No. in series | No. in season | Title | Directed by | Written by | Original air date | Production code |
| --- | --- | --- | --- | --- | --- | --- |
| 34 | 1 | "Racing in the Streets" | Brian Hargrove | Chris Sheridan | November14,2001 | 3ADK-01 |
| 35 | 2 | "Amy's Birthday" | Gary Shimokawa | John R. Morey | November21,2001 | 3ADK-03 |
| 36 | 3 | "Tommy's Not Gay" | Gary Shimokawa | Christopher Case | November28,2001 | 3ADK-04 |
| 37 | 4 | "Shannon's Song" | Joe Regalbuto | Sally Lapiduss | December5,2001 | 3ADK-08 |
| 38 | 5 | "Grad School" | Gary Shimokawa | Jennifer Fisher | December12,2001 | 3ADK-02 |
| 39 | 6 | "Houseboat" | Joe Regalbuto | Jim Hope | December19,2001 | 3ADK-06 |
| 40 | 7 | "The Trial" | Jack Kenny | Christopher Titus | January2,2002 | 3ADK-05 |
| 41 | 8 | "Grandma Titus" | Brian Hargrove | Shawn Thomas | January9,2002 | 2ADK-25 |
| 42 | 9 | "Errrr" | Jack Kenny | Chris Sheridan | January16,2002 | 3ADK-13 |
| 43 | 10 | "Tommy's Crush" | Kevin Rodney Sullivan | Patrick Meighan | January23,2002 | 3ADK-09 |
| 44 | 11 | "Into Thin Air" | John Amodeo | Robert Hawkins | January30,2002 | 3ADK-11 |
| 45 | 12 | "Too Damn Good" | Gary Shimokawa | David L. Moses | February6,2002 | 3ADK-16 |
| 46 | 13 | "Bachelor Party" | Leslie Kolins Small | Jennifer Fisher | February13,2002 | 3ADK-15 |
| 47 | 14 | "Hot Streak" | Joe Regalbuto | Patrick Meighan & John R. Morey | February20,2002 | 3ADK-14 |
| 48 | 15 | "The Session" | Brian Hargrove | Matt Ember | March6,2002 | 3ADK-10 |
| 49 | 16 | "Same Courtesy" | Bill Shea | Christopher Case | March20,2002 | 3ADK-12 |
| 50 | 17 | "After Mrs. Shafter" | Bill Shea | Shawn Thomas | July29,2002 | 3ADK-17 |
| 51 | 18 | "The Visit" | Katy Garretson | Christopher Titus | July29,2002 | 3ADK-18 |
| 52/53 | 19/20 | "Insanity Genetic" | Kevin Rodney Sullivan Gary Shimokawa | Jim Hope Nancy Steen & Matt Ember | August5,2002 | 3ADK-19/3ADK-20 |
Question:
What's the season number of the episode titled "Grad school"?
Answer:
5.0