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:
| Canton | Years of Kindergarten | Years of Kindergarten provided | Years of Kindergarten legally required | Length of Primary School | Length of mandatory Secondary School | Separate Secondary Schools? | Cooperative Secondary Schools? | Integrated Secondary Schools? |
| --- | --- | --- | --- | --- | --- | --- | --- | --- |
| Zurich | 2.0 | 2 | 2 | 6.0 | 3.0 | Yes | No | No |
| Bern | 1.0 | 1 | 0 | 6.0 | 3.0 | Yes | Yes | Yes |
| Lucerne | 1.0 | 1 | 1 | 6.0 | 3.0 | Yes | Yes | Yes |
| Uri | 1.0 | 1 | 0 | 6.0 | 3.0 | No | No | Yes |
| Schwyz | 1.0 | 1 | 1 | 6.0 | 3.0 | No | No | Yes |
| Obwalden | 1.0 | 1 | 1 | 6.0 | 3.0 | No | No | Yes |
| Nidwalden | 2.0 | 2 | 1 | 6.0 | 3.0 | No | No | Yes |
| Glarus | 2.0 | 2 | 1 | 6.0 | 3.0 | Yes | Yes | Yes |
| Zug | 2.0 | 1 | 1 | 6.0 | 3.0 | No | No | Yes |
| Fribourg | 2.0 | 1 or 2 | 0 or 2 | 6.0 | 3.0 | Yes | No | Yes |
| Solothurn | 2.0 | 2 | 0 | 6.0 | 3.0 | Yes | Yes | Yes |
| Basel-Stadt | 2.0 | 2 | 2 | 4.0 | 5.0 | Yes | No | No |
| Basel-Landschaft | 2.0 | 2 | 1 | 5.0 | 4.0 | Yes | No | No |
| Schaffhausen | 2.0 | 2 | 1 | 6.0 | 3.0 | No | No | Yes |
| Appenzell Ausserrhoden | 2.0 | 2 | 1 | 6.0 | 3.0 | Yes | Yes | Yes |
| Appenzell Innerrhoden | 2.0 | 2 | 1 | 6.0 | 3.0 | Yes | Yes | Yes |
| St. Gallen | 2.0 | 2 | 2 | 6.0 | 3.0 | No | No | Yes |
| Graubünden | 1.0 | 1 | 0 | 6.0 | 3.0 | Yes | No | No |
| Aargau | 1.0 | 1 | 0 | 5.0 | 4.0 | Yes | No | No |
| Thurgau | 2.0 | 2 | 2 | 6.0 | 3.0 | Yes | No | No |
| Ticino | 3.0 | 3 | 0 | 5.0 | 4.0 | Yes | No | No |
| Vaud | 2.0 | 2 | 0 | 4.0 | 5.0 | Yes | No | No |
| Valais | 1.0 | 0 | 0 | 6.0 | 3.0 | Yes | No | No |
| Neuchâtel | 2.0 | 2 | 0 | 5.0 | 4.0 | Yes | No | No |
| Geneva | 2.0 | 2 | 0 | 6.0 | 3.0 | Yes | No | No |
Question:
What is the longest length of mandatory secondary school?
Answer:
5.0