   The purposes of this study were to 1) examine the development of English reading abilities in students via the use of authentic texts and thus examine the overall efficiency of English reading lesson plans 2) compare the reading development of students before and after the experimenting with English reading by using authentic texts, and 3) examine student attitudes towards learning English reading via the use of authentic texts.
   The study sample involved 30 Prathomsuksa six students enrolled in second semester of 2009 at the Wat Bangwua (Saisermwit) School. Students were selected by simple random  sampling. The research design involved a one group pretest-posttest design. 
	   Instruments used in the experiment involved 15 English reading lesson plans, an English reading comprehension test and an attitude evaluation form. The study was carried out for 5 weeks and included three periods a week. The statistical devices employed for the data analysis were mean, percentage, standard deviation and t-test dependent.
	   The findings of the study were as follows:
	   1. The efficiency of the English reading lesson plans was found to be
	       77.96/77.78  which was at the level of setting standard criterion.
	   2. Students? learning achievement after the experiment was significantly
	       higher than before the experiment at .01.
	   3. Attitudes towards learning English reading by the use authentic texts were 
      	       at the highest level among students.
