chore: add more rules for finding disaggregation columns and parsing sped values

app/models/sped.rb

@@ -10,7 +10,7 @@ class Sped < ApplicationRecord
     case sped
     in /active|^A$|1|Special\s*Education/i
       "Special Education"
-    in /^I$|exited|0|Not\s*Special\s*Education/i
+    in /^I$|exited|0|Not\s*Special\s*Education|Does\s*not\s*apply/i
       "Not Special Education"
     in /^NA$|^#NA$|Unknown/i
       "Unknown"

app/services/survey_item_values.rb

@@ -169,7 +169,7 @@ class SurveyItemValues
   end
 
   def raw_income
-    @raw_income ||= value_from(pattern: /Low\s*Income|Raw\s*Income|SES-\s*SIS|EconDisadvantaged/i)
+    @raw_income ||= value_from(pattern: /Low\s*Income|Raw\s*Income|SES-\s*SIS|EconDisadvantaged|Income\s*SIS/i)
   end
 
   def income
@@ -177,7 +177,7 @@ class SurveyItemValues
   end
 
   def raw_ell
-    @raw_ell ||= value_from(pattern: /EL Student First Year|Raw\s*ELL|ELL-\s*SIS/i)
+    @raw_ell ||= value_from(pattern: /EL Student First Year|Raw\s*ELL|ELL-*\s*SIS/i)
   end
 
   def ell