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Table 9. 
Effect of Lags and Leads of Charter Penetration
Los Angeles County
Number of ChartersCharter Seats as Percentage of Enrollment
36 months prior to sale −0.0005 −0.001 
 (0.0100) (0.027) 
24 months prior to sale −0.0039 −0.017 
 (0.0093) (0.031) 
12 months prior to sale −0.0055 −0.008 
 (0.0089) (0.030) 
Time of sale −0.0010 0.006 
 (0.0088) (0.031) 
12 months after sale 0.0038 0.033** 
 (0.0054) (0.015) 
24 months after sale −0.0082 −0.019 
 (0.0080) (0.025) 
36 months after sale 0.0190* 0.013 
 (0.0102) (0.037) 
Observations 158,211 158,211 
R2 0.88 0.88 
Los Angeles County
Number of ChartersCharter Seats as Percentage of Enrollment
36 months prior to sale −0.0005 −0.001 
 (0.0100) (0.027) 
24 months prior to sale −0.0039 −0.017 
 (0.0093) (0.031) 
12 months prior to sale −0.0055 −0.008 
 (0.0089) (0.030) 
Time of sale −0.0010 0.006 
 (0.0088) (0.031) 
12 months after sale 0.0038 0.033** 
 (0.0054) (0.015) 
24 months after sale −0.0082 −0.019 
 (0.0080) (0.025) 
36 months after sale 0.0190* 0.013 
 (0.0102) (0.037) 
Observations 158,211 158,211 
R2 0.88 0.88 

Notes: See table 4 for a description of baseline sample and controls. Robust standard errors clustered by elementary school zone in 2002 in parentheses.

*Significant at the 10% level; **significant at the 5% level.

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