DAX - Token Eof expected error.

I am trying to add a custom column using the following DAX Code. I keep getting the error "Token Eof expected" around the first line - "....StartDate =". Please help.

VAR StartDate =
DATE(
YEAR([Completion time])
- IF(MONTH([Completion time]) < 8, 1, 0),
8,
1
)

VAR Block1End = StartDate + 9 * 7
VAR Block2End = Block1End + 10 * 7
VAR Block3End = Block2End + 9 * 7
VAR Block4End = Block3End + 10 * 7

RETURN
IF(
CONTAINSSTRING([Select your class:], "First Year"),

SWITCH(
TRUE(),
[Completion time] >= StartDate
&& [Completion time] < Block1End, "Block 1",
[Completion time] < Block2End, "Block 2",
[Completion time] < Block3End, "Block 3",
[Completion time] < Block4End, "Block 4",
BLANK()
),

SWITCH(
TRUE(),
[Completion time] >= StartDate
&& [Completion time] < Block1End, "Block 5",
[Completion time] < Block2End, "Block 6",
[Completion time] < Block3End, "Block 7",
[Completion time] < Block4End, "Block 8",
BLANK()
)
)